CAJ | 학술논문

联合变换相关器是一种用于高分辨力空间相机像移量测量的技术，本文采用在图像处理器上运行联合变换相关算法的方法，取代了基于空间光调制器实现的光学相关器，提高了联合变换相关器的空间环境适应性和可靠性。本文通过大量仿真试验，研究了输入图像的尺寸、相对位移量的幅度对算法测量精度的影响，结果表明：在设计联合变换相关器时，增大输入图像的尺寸有助于提高测量的精度和相关器的灵敏度，并且能够防止测量的结果出现奇异值。
연합변환상관기시일충용우고분변력공간상궤상이량측량적기술，본문채용재도상처리기상운행연합변환상관산법적방법，취대료기우공간광조제기실현적광학상관기，제고료연합변환상관기적공간배경괄응성화가고성。본문통과대량방진시험，연구료수입도상적척촌、상대위이량적폭도대산법측량정도적영향，결과표명：재설계연합변환상관기시，증대수입도상적척촌유조우제고측량적정도화상관기적령민도，병차능구방지측량적결과출현기이치。
Joint transform correlator is a technology used on space camera image motion measurement. The traditional optical joint transform correlator implemented by space light modulator is replaced by electronical joint transform correlator implemented by running the algorithm in a digital processor, which makes correlator adapt to the space radioactive environment and enhances the reliability. By doing massive simulation experiments, the influence of the size of the input images and the relative movement between two input images on the measurement precision of joint transform correlation is analyzed. Results of simulation experiments show that it is necessary to enlarge the size of the input images to increase the precision and sensitivity of joint transform correlator when designing a correlator, and enlarging size of the input images can also prevent singular values showing in the measurement results.